Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
HubSpot Free Email Marketing - Powerful drag and drop email marketing in the HubSpot CRM
HelpDocs - Educate your users with a super simple knowledge base that’s built for teams just like yours.
Email Marketing: A Beginner's Guide - Master email marketing with these 3 short ebooks from Drip.
Document360 - Self-service knowledge base software focused on SaaS Products & Enterprise Software Projects.
Elevatr Email Marketing Automation - Fast and easy email marketing software